Question
Recently, I discovered that a six-month-old baby has a hard lump in the meat of the left upper arm, above the site where a vaccine was administered. There are no visible abnormalities, but it can be felt and its shape resembles a jujube seed.
Answer
Dear Parent, based on your description, the child’s condition may be due to a regional subcutaneous nodule caused by the vaccine injection. It is recommended to avoid pressing on it and heat compress therapy can be used as symptomatic treatment. There is no need to worry excessively. It is suggested to apply regional heat compresses for 15 to 20 minutes daily, paying attention to avoid burns on the child. Continue this treatment, and it is hoped that the lump will gradually absorb later.